package com.jm.config;

import com.jm.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Slf4j
@Configuration
public class WebConfig extends WebMvcConfigurationSupport {

    /**
     * 设置静态资源映射
     * 告诉SpringMVC静态资源位置,不进行拦截控制
     * @param registry
     */
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
        registry.addResourceHandler("/images/**").addResourceLocations("classpath:/images/");
    }

    /**
     * 扩展SpringMVC的的消息转换器
     *
     * @param converters
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
//        创建消息转换器对象
        MappingJackson2HttpMessageConverter mjhc = new MappingJackson2HttpMessageConverter();
//        设置对象转换器
        mjhc.setObjectMapper(new JacksonObjectMapper());
//        将上面的消息转换器增加到SpringMVC的消息转换器中
        converters.add(0, mjhc);
    }
}
